[2019] 13 Hours left to collect Double Rewards.

We did think it through, though.
I may as well quote myself why:

So, for active player getting double bonus shouldn't take too much time, and shouldn't be that hard, given notice beforehand, but there's also an alternative way:
When new year event starts - you can get snowflake reward and reset the line after that if you want to, and to receive a double bonus You'll have until mid-February.

It should be noted, you had 13 hours to reset a line under the first season of the Research Bureau, but you did not have to regrind the line within the 13 hours.

So long as you reset a line within the season, that line will retain the 2x multiplier regardless of how long it takes you to gain your first win on the related ships.

Fem,